Loans and Leases - Narrative (Details) - USD ($) |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Unamortized deferred loan origination costs | $ (221,100,000) | $ (237,600,000) |
| Total loans and leases | 17,822,218,000 | 18,029,552,000 |
| FRB Borrowings | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total loans and leases | 0 | 0 |
| Asset Pledged as Collateral with Right | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total loans and leases | 5,700,000,000 | 6,300,000,000 |
| Loans and Leases Receivable | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accrued interest on loans and leases | $ 76,400,000 | $ 77,800,000 |
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of accrued interest on financing receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|